org.mp4parser.boxes.samplegrouping

Class VisualRandomAccessEntry

java.lang.Object

org.mp4parser.boxes.samplegrouping.GroupEntry

org.mp4parser.boxes.samplegrouping.VisualRandomAccessEntry

public class VisualRandomAccessEntry
extends GroupEntry

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For some coding systems a sync sample is specified to be a random access point after which all samples in decoding order can be correctly decoded. However, it may be possible to encode an “open” random access point, after which all samples in output order can be correctly decoded, but some samples following the random access point in decoding order and preceding the random access point in output order need not be correctly decodable. For example, an intra picture starting an open group of pictures can be followed in decoding order by (bi-)predicted pictures that however precede the intra picture in output order; though they possibly cannot be correctly decoded if the decoding starts from the intra picture, they are not needed.

Such "open" random-access samples can be marked by being a member of this group. Samples marked by this group must be random access points, and may also be sync points (i.e. it is not required that samples marked by the sync sample table be excluded).

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	TYPE

Constructor Summary

Constructors

Constructor and Description
VisualRandomAccessEntry()

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
java.nio.ByteBuffer	get()
short	getNumLeadingSamples()
java.lang.String	getType()
int	hashCode()
boolean	isNumLeadingSamplesKnown()
void	parse(java.nio.ByteBuffer byteBuffer)
void	setNumLeadingSamples(short numLeadingSamples)
void	setNumLeadingSamplesKnown(boolean numLeadingSamplesKnown)
java.lang.String	toString()

Methods inherited from class org.mp4parser.boxes.samplegrouping.GroupEntry

size

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

TYPE

public static final java.lang.String TYPE

See Also:

Constant Field Values

Constructor Detail

VisualRandomAccessEntry

public VisualRandomAccessEntry()

Method Detail

getType

public java.lang.String getType()

Specified by:

getType in class GroupEntry

isNumLeadingSamplesKnown

public boolean isNumLeadingSamplesKnown()

setNumLeadingSamplesKnown

public void setNumLeadingSamplesKnown(boolean numLeadingSamplesKnown)

getNumLeadingSamples

public short getNumLeadingSamples()

setNumLeadingSamples

public void setNumLeadingSamples(short numLeadingSamples)

parse

public void parse(java.nio.ByteBuffer byteBuffer)

Specified by:

parse in class GroupEntry

get

public java.nio.ByteBuffer get()

Specified by:

get in class GroupEntry

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object